Ardith J. Bartel E. L. Brandt Paul H. Briggs S. Danahey D.L. Fey D. B. Hatfield M.J. Malcolm V. Merritt G. O. Riddle S. Roof K. C. Stewart J. Storey Joseph E. Taggert Jr. R. B. Vaughn Jon J. Connor 1990 <p>No abstract available.</p> application/pdf 10.3133/ofr90234A en U.S. Geological Survey Geochemical stratigraphy of the Yellowjacket Formation (Middle Proterozoic) in the area of the Idaho Cobalt Belt, Lemhi County, Idaho: Part A. Discussion reports